<PRE><B>Question 313852</B>
A printing press has a roller 17 inches in diameter. The speed of a point on the rollers surface moves at 58 feet per second. What is the rollers angular speed?
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circumference = (pi)d = 17(pi)inches = (17/36)pi ft
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# of revolutions per second = 58/[17pi/36] = 39.1
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angular speed = 39.1(2pi) rad/sec = 78.2pi rad/sec
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Cheers,
Stan H.</PRE>